gene heskett wrote:
And the guy you bought it from claimed very little wear I'll bet...
No, no, they were honest that it was beat, it was the last one at a HUGE
auction after
everybody had taken the good stuff. But, it was a SMALL machine,
significantly
smaller than J-head Bridgeports,
On Wednesday, February 15, 2012 02:47:30 PM Jon Elson did opine:
gene heskett wrote:
And the guy you bought it from claimed very little wear I'll bet...
No, no, they were honest that it was beat, it was the last one at a HUGE
auction after
everybody had taken the good stuff. But, it was
On 02/14/2012 12:01 AM, gene heskett wrote:
On Tuesday, February 14, 2012 12:53:29 AM Mark Cason did opine:
On 02/13/2012 10:03 PM, gene heskett wrote:
On Monday, February 13, 2012 10:21:08 PM Jon Elson did opine:
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I
around
the spindle axis.
--- On Mon, 2/13/12, gene heskett ghesk...@wdtv.com wrote:
From: gene heskett ghesk...@wdtv.com
Subject: Re: [Emc-users] Need advice on 1/16 end mill
To: emc-users@lists.sourceforge.net
Date: Monday, February 13, 2012, 8:06 PM
On Monday, February 13, 2012 11:04:19 PM
gene heskett schrieb:
Guy's, maybe I don't understand cutting alu as well as I thought.
Cheers, Gene
Gene, just don't make so much fuss of the oxidizing bit. Run the machine
at its highest revs (al least with these small cutters), don't think
about it, take as big a chip as the machine
advice on 1/16 end mill
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Date: Monday, February 13, 2012, 7:06 PM
On Mon, Feb 13, 2012 at 5:23 PM, dave dengv...@charter.net wrote:
I did find a Russian video using alcohol for cooling.
I am not surprised---and I am
: gene heskett ghesk...@wdtv.com
Subject: Re: [Emc-users] Need advice on 1/16 end mill
To: emc-users@lists.sourceforge.net
Date: Monday, February 13, 2012, 4:19 AM
On Monday, February 13, 2012 07:18:35 AM Erik Christiansen did opine:
On 13.02.12 01:10, gene heskett wrote:
This particular sheet
On Tuesday, February 14, 2012 06:27:36 AM Jon Elson did opine:
gene heskett wrote:
This effect was discussed at length when we made the first 'test'
cases for our tv cameras out of alu we had cad plated back in 1960
and discovered that no amount of cad plating could protect them from
8
On Tuesday, February 14, 2012 06:49:06 AM Mark Cason did opine:
[...]
alloys, There's a reason why noble gases, specifically Argon, and
Helium are used as shielding gases. The only exception is CO2, where
it's used in welding.
There, particularly in a mig setup, its main reason is
On Tuesday, February 14, 2012 07:13:58 AM charles green did opine:
something else to watch out for on the smaller end mills is a long - and
therefor flexible - shank. chuck the tool up into the spindle as far
as possible. this also reduces the effect of any small alignment
errors between
On Tuesday, February 14, 2012 07:18:09 AM Peter Blodow did opine:
gene heskett schrieb:
Guy's, maybe I don't understand cutting alu as well as I thought.
Cheers, Gene
Gene, just don't make so much fuss of the oxidizing bit. Run the machine
at its highest revs (al least with these
maybe so, but the folks in the shop at work are always surprising me.
--- On Tue, 2/14/12, gene heskett ghesk...@wdtv.com wrote:
From: gene heskett ghesk...@wdtv.com
Subject: Re: [Emc-users] Need advice on 1/16 end mill
To: emc-users@lists.sourceforge.net
Date: Tuesday, February 14, 2012, 4:15
Gene, how about drilling those holes, if you don't need more resolution
than that. Even simpler: punch them with a paper (document) punch (don't
know what the term in english is) in a straight piece of sheet metal.
Peter
gene heskett schrieb:
On Tuesday, February 14, 2012 07:18:09 AM Peter
On Mon, 13 Feb 2012 20:41:18 -0600
Jon Elson el...@pico-systems.com wrote:
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I thought.
All along, I have believed that it was more important to keep the
oxygen in the air away from the cutting surface in
Peter Blodow wrote:
Climb milling is preferable if the backlash of your screw will permit
it. Blades will always cut into fresh material, less friction, less
heat. With small cutters, you may compensate for backlash with a fairly
large retaining spring.
Climb milling can be a problem
gene heskett wrote:
my trial copy timed out. http://www.mrmachinist.net/
I just checked, it seems to still have the feed rate, etc. calculator.
Needs wine $70.
Do they have a trial version?
Since I have yet to stumble over a suitable pan to catch recycle the
coolant, air
dave wrote:
I suspect the only reason to use carbide is that small HSS mills are
really flexible.
Well, it is both a hardness/wear resistance issue and a stiffness
issue. I VERY rarely
use small HSS tooling for this reason. Our shop at work is guys from
the old school
and almost never
On Tue, 14 Feb 2012 12:25:31 -0600
Jon Elson el...@pico-systems.com wrote:
dave wrote:
I suspect the only reason to use carbide is that small HSS mills are
really flexible.
Well, it is both a hardness/wear resistance issue and a stiffness
issue. I VERY rarely
use small HSS tooling
On Tuesday, February 14, 2012 02:50:10 PM Steve Stallings did opine:
But, there are some calculators. I have used
Mr. Machinst, but I think
my trial copy timed out. http://www.mrmachinist.net/
I just checked, it seems to still have the feed rate, etc.
calculator.
Needs
On Tuesday, February 14, 2012 02:51:18 PM Peter Blodow did opine:
Gene, how about drilling those holes, if you don't need more resolution
than that. Even simpler: punch them with a paper (document) punch (don't
know what the term in english is) in a straight piece of sheet metal.
Peter
I
On Tuesday, February 14, 2012 03:23:53 PM Jon Elson did opine:
gene heskett wrote:
my trial copy timed out. http://www.mrmachinist.net/
I just checked, it seems to still have the feed rate, etc.
calculator.
Needs wine $70.
Do they have a trial version?
Since I have yet to
On Tuesday, February 14, 2012 03:27:03 PM dave did opine:
On Tue, 14 Feb 2012 12:25:31 -0600
Jon Elson el...@pico-systems.com wrote:
dave wrote:
I suspect the only reason to use carbide is that small HSS mills are
really flexible.
Well, it is both a hardness/wear resistance issue
dave wrote:
GOOD GRIEF!! and I thought 0.003 on X and Y was bad.
Well, that was the original 1938 Acme screw and bronze nuts. The threads in
the center of the X screw are thinner to the extent you can see it from
ten feet
away! Now, I have a backlash of about .001 - .0015 on all the axes
On Tuesday, February 14, 2012 11:14:41 PM Jon Elson did opine:
dave wrote:
GOOD GRIEF!! and I thought 0.003 on X and Y was bad.
Well, that was the original 1938 Acme screw and bronze nuts. The
threads in the center of the X screw are thinner to the extent you can
see it from ten feet
On Tue, 14 Feb 2012 21:00:16 -0600
Jon Elson el...@pico-systems.com wrote:
dave wrote:
GOOD GRIEF!! and I thought 0.003 on X and Y was bad.
Well, that was the original 1938 Acme screw and bronze nuts. The
threads in the center of the X screw are thinner to the extent you
can see it
On 13 February 2012 01:10, gene heskett ghesk...@wdtv.com wrote:
So, I need to find a more suitable mill for this, I assume only 1 or 2
flute, and maybe only 1/8 of working bit.
Can you use 1.5mm and afford to wait a week or so?
, andy pugh bodge...@gmail.com wrote:
From: andy pugh bodge...@gmail.com
Subject: Re: [Emc-users] Need advice on 1/16 end mill
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Date: Monday, February 13, 2012, 2:06 AM
On 13 February 2012 01:10, gene heskett ghesk...@wdtv.com wrote
On Monday, February 13, 2012 07:03:03 AM Greg Bernard did opine:
Gene-
Sounds like your problem is mostly due to the crappy aluminum. I had
that happen this weekend cutting an aluminum sign using customer
supplied material. I did a dry run with a .07 2 flute in some 6061
alloy (which cuts
On Monday, February 13, 2012 07:13:26 AM Mark Cason did opine:
On 02/13/2012 12:21 AM, gene heskett wrote:
I have their 2011/12 catalog, and it shows 1/8 as their smallest
high helix carbide cutter.
If the price is good, then it might worth downloading the catalog, but
its about 150
On Monday, February 13, 2012 07:18:35 AM Erik Christiansen did opine:
On 13.02.12 01:10, gene heskett wrote:
This particular sheet of alu seems to be dead soft. The chips it was
making looked about the right size spinning around in the oil.
I don't have water out there other than used.
On Monday, February 13, 2012 07:22:12 AM andy pugh did opine:
On 13 February 2012 01:10, gene heskett ghesk...@wdtv.com wrote:
So, I need to find a more suitable mill for this, I assume only 1 or 2
flute, and maybe only 1/8 of working bit.
Can you use 1.5mm and afford to wait a week or
On Monday, February 13, 2012 07:26:20 AM charles green did opine:
danger! the coated tools are terrible on aluminum. the coating has a
micro roughness that nucleates chip welding of soft aluminum. coatings
are good for lubricity of hard material chips against the cutter, but a
mirror
I do a ton of work with small cutters and in aluminum, I use a coolant mister
with alcohol, I use as much air as possible and just enough alcohol to keep the
part wet. The parts feel like they were in the freezer when I am done.
As Jon said keep the work cold.
Bruce
gene heskett wrote:
This particular sheet of alu seems to be dead soft. The chips it was
making looked about the right size spinning around in the oil.
Well, that may be the problem. You do NOT want to keep recutting the same
chips. You want a steady stream of something to remove the
On Monday, February 13, 2012 11:53:57 AM Bruce Klawiter did opine:
I do a ton of work with small cutters and in aluminum, I use a coolant
mister with alcohol, I use as much air as possible and just enough
alcohol to keep the part wet. The parts feel like they were in the
freezer when I am
On 13 February 2012 20:59, gene heskett ghesk...@wdtv.com wrote:
On Monday, February 13, 2012 11:53:57 AM Bruce Klawiter did opine:
I do a ton of work with small cutters and in aluminum, I use a coolant
mister with alcohol, I use as much air as possible and just enough
alcohol to keep the
On Monday, February 13, 2012 02:24:49 PM Roland Jollivet did opine:
..snip
I would imagine... that the oxide layer is way way thinner than a micron
in thickness, and while tough as you say, in climb milling the cutter
tip will hit the metal and with the eggshell effect, simply push past
On 13 February 2012 21:38, gene heskett ghesk...@wdtv.com wrote:
On Monday, February 13, 2012 02:24:49 PM Roland Jollivet did opine:
..snip
I would imagine... that the oxide layer is way way thinner than a micron
in thickness, and while tough as you say, in climb milling the cutter
On Mon, 13 Feb 2012 22:09:47 +0200
Roland Jollivet roland.jolli...@gmail.com wrote:
On 13 February 2012 21:38, gene heskett ghesk...@wdtv.com wrote:
On Monday, February 13, 2012 02:24:49 PM Roland Jollivet did opine:
..snip
I would imagine... that the oxide layer is way way
On Monday, February 13, 2012 08:17:33 PM Roland Jollivet did opine:
But.. you can take almost any piece aluminium lying around (not
anodised), lightly touch it with the blunt rounded side of two
crocodile clips, and you'll measure a few milliohms. What happened to
the oxide layer? It's so
On Monday, February 13, 2012 08:59:31 PM dave did opine:
On Mon, 13 Feb 2012 22:09:47 +0200
Roland Jollivet roland.jolli...@gmail.com wrote:
On 13 February 2012 21:38, gene heskett ghesk...@wdtv.com wrote:
On Monday, February 13, 2012 02:24:49 PM Roland Jollivet did opine:
..snip
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I thought.
All along, I have believed that it was more important to keep the oxygen in
the air away from the cutting surface in order to slow the formation of alu
oxide on the surface, which in normal air, not
[mailto:farmerboy1...@yahoo.com]
Sent: Monday, February 13, 2012 2:24 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Need advice on 1/16 end mill
On 02/13/2012 12:21 AM, gene heskett wrote:
I have their 2011/12 catalog, and it shows 1/8 as their smallest high
helix carbide cutter
On Mon, Feb 13, 2012 at 5:23 PM, dave dengv...@charter.net wrote:
I did find a Russian video using alcohol for cooling.
I am not surprised---and I am sure that gherkins and bacon were involved too
(an old joke from where I grew up:
Medical team in an operating theater, lights, lots of
On Monday, February 13, 2012 10:21:08 PM Jon Elson did opine:
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I thought.
All along, I have believed that it was more important to keep the
oxygen in the air away from the cutting surface in order to slow the
On 02/13/2012 10:03 PM, gene heskett wrote:
On Monday, February 13, 2012 10:21:08 PM Jon Elson did opine:
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I thought.
All along, I have believed that it was more important to keep the
oxygen in the air away from the
gene heskett wrote:
Roland Jollivet roland.jolli...@gmail.com wrote:
Taken directly from the OSG 2-3 flute carbide end mill section.
dia rpm feed (ipm)
.01510 7.1
.02062000 7.9
0.034 7.9
0.0625 21200 7.9
5/64
On Tuesday, February 14, 2012 12:53:29 AM Mark Cason did opine:
On 02/13/2012 10:03 PM, gene heskett wrote:
On Monday, February 13, 2012 10:21:08 PM Jon Elson did opine:
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I thought.
All along, I have believed
gene heskett wrote:
This effect was discussed at length when we made the first 'test' cases for
our tv cameras out of alu we had cad plated back in 1960 and discovered
that no amount of cad plating could protect them from 8 hours over the side
of an LST 50 miles west of San Diego.
I am NOT
Hi Guys;
I just broke my last brand new 1/16th carbide end mill in about 15 minutes
running time, a 4 flute with about 1/2 of working length, trying to get
started on another alu encoder wheel, getting about 80% of the way around
the outside, running at 2500 revs, and 1.5 ipm, cutting only
I've had good luck with the high-spiral (aluminum specific) 2-flute
cutters, but have not gone below 1/8 The cutters only have about
3/8 of cutting depth. Something like McMaster 8829A12?
DougM
On Sun, Feb 12, 2012 at 5:10 PM, gene heskett ghesk...@wdtv.com wrote:
Hi Guys;
I just broke my
On Sunday, February 12, 2012 10:36:58 PM doug metzler did opine:
I've had good luck with the high-spiral (aluminum specific) 2-flute
cutters, but have not gone below 1/8 The cutters only have about
3/8 of cutting depth. Something like McMaster 8829A12?
DougM
I found the 1/16 version,
Check out shars.com
I think they have high helix 2 flute aluminum bits at pretty good prices.
Also the long cutting area is why they are breaking. Get a stubby length.
--
Try before you buy = See our experts in action!
gene heskett wrote:
Hi Guys;
I just broke my last brand new 1/16th carbide end mill in about 15 minutes
running time, a 4 flute with about 1/2 of working length, trying to get
started on another alu encoder wheel, getting about 80% of the way around
the outside, running at 2500 revs, and
score.
--- On Sun, 2/12/12, gene heskett ghesk...@wdtv.com wrote:
From: gene heskett ghesk...@wdtv.com
Subject: Re: [Emc-users] Need advice on 1/16 end mill
To: emc-users@lists.sourceforge.net
Date: Sunday, February 12, 2012, 7:50 PM
On Sunday, February 12, 2012 10:36:58 PM doug metzler did
On Monday, February 13, 2012 12:36:51 AM Dean Hedin did opine:
Check out shars.com
I think they have high helix 2 flute aluminum bits at pretty good
prices. Also the long cutting area is why they are breaking. Get a
stubby length.
I Think they have them, but they refuse to show them to me
On 02/12/2012 11:39 PM, gene heskett wrote:
On Monday, February 13, 2012 12:36:51 AM Dean Hedin did opine:
Check out shars.com
I think they have high helix 2 flute aluminum bits at pretty good
prices. Also the long cutting area is why they are breaking. Get a
stubby length.
I Think they
On Monday, February 13, 2012 12:40:45 AM Jon Elson did opine:
gene heskett wrote:
Hi Guys;
I just broke my last brand new 1/16th carbide end mill in about 15
minutes running time, a 4 flute with about 1/2 of working length,
trying to get started on another alu encoder wheel, getting
On Monday, February 13, 2012 01:12:11 AM charles green did opine:
some right angle dremel tool attachments have flat sides that can be
clamped to other things. there are also air powered pencil die
grinders that have been adapted as high rpm spindles.
for cutting thin sheets, an exacto
On Monday, February 13, 2012 01:18:55 AM Mark Cason did opine:
On 02/12/2012 11:39 PM, gene heskett wrote:
On Monday, February 13, 2012 12:36:51 AM Dean Hedin did opine:
Check out shars.com
I think they have high helix 2 flute aluminum bits at pretty good
prices. Also the long cutting
it's all 360 brass which machines beautifully.
Plus, it's very easy to blacken it.
From: gene heskett ghesk...@wdtv.com
To: emc-users@lists.sourceforge.net
Sent: Monday, February 13, 2012 12:17 AM
Subject: Re: [Emc-users] Need advice on 1/16 end mill
On 02/13/2012 12:21 AM, gene heskett wrote:
I have their 2011/12 catalog, and it shows 1/8 as their smallest high
helix carbide cutter.
If the price is good, then it might worth downloading the catalog, but its
about 150 megs so I killed that download. Is the price right? say under
$15/copy?
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